{1380} Primeδοκέωdokeo{dok-eh'-o}A prolonged form of a primary verb δόκω [[doko]], {dok'-o} (used only as an alternate in certain tenses; compare the base of G1166); of the same meaning; to think; by implication to seem (truthfully or uncertainly).

{1096} Primeγίνομαιginomai{ghin'-om-ahee}A prolonged and middle form of a primary verb; to cause to be ('gen' -erate), that is, (reflexively) to become (come into being), used with great latitude (literally, figuratively, intensively, etc.).

{2532} Primeκαίkai{kahee}Apparently a primary particle, having a copulative and sometimes also a cumulative force; and, also, even, so, then, too, etc.; often used in connection (or composition) with other particles or small words.

{0846} Primeαὐτόςautos{ow-tos'}From the particle αὖ [[au]] (perhaps akin to the base of G0109 through the idea of a baffling wind; backward); the reflexive pronoun self, used (alone or in the compound of G1438) of the third person, and (with the proper personal pronoun) of the other persons.

{4198} Primeπορεύομαιporeuomai{por-yoo'-om-ahee}Middle voice from a derivative of the same as G3984; to traverse, that is, travel (literally or figuratively; especially to remove [figuratively die], live, etc.).

(2532) Complementκαίkai{kahee}Apparently a primary particle, having a copulative and sometimes also a cumulative force; and, also, even, so, then, too, etc.; often used in connection (or composition) with other particles or small words.

Matthew 18:12-13

_ _ How think ye? If a man have an hundred sheep, and one of them be gone astray, etc.  This is another of those pregnant sayings which our Lord uttered more than once. See the delightful parable of the lost sheep in Luke 15:4-7. Only the object there is to show what the good Shepherd will do, when even one of His sheep is lost, to find it; here the object is to show, when found, how reluctant He is to lose it. Accordingly, it is added,

Matthew 18:12

[[no comment]]

How:

Matthew 21:28 But what think ye? A [certain] man had two sons; and he came to the first, and said, Son, go work to day in my vineyard.Matthew 22:42 Saying, What think ye of Christ? whose son is he? They say unto him, [The Son] of David.1 Corinthians 10:15 I speak as to wise men; judge ye what I say.

if:

Matthew 12:11 And he said unto them, What man shall there be among you, that shall have one sheep, and if it fall into a pit on the sabbath day, will he not lay hold on it, and lift [it] out?Psalms 119:176 I have gone astray like a lost sheep; seek thy servant; for I do not forget thy commandments.Isaiah 53:6All we like sheep have gone astray; we have turned every one to his own way; and the LORD hath laid on him the iniquity of us all.Jeremiah 50:6 My people hath been lost sheep: their shepherds have caused them to go astray, they have turned them away [on] the mountains: they have gone from mountain to hill, they have forgotten their restingplace.Ezekiel 34:16 I will seek that which was lost, and bring again that which was driven away, and will bind up [that which was] broken, and will strengthen that which was sick: but I will destroy the fat and the strong; I will feed them with judgment.Ezekiel 34:28 And they shall no more be a prey to the heathen, neither shall the beast of the land devour them; but they shall dwell safely, and none shall make [them] afraid.Luke 15:4-7 What man of you, having an hundred sheep, if he lose one of them, doth not leave the ninety and nine in the wilderness, and go after that which is lost, until he find it? ... I say unto you, that likewise joy shall be in heaven over one sinner that repenteth, more than over ninety and nine just persons, which need no repentance.John 10:11-21 I am the good shepherd: the good shepherd giveth his life for the sheep. ... Others said, These are not the words of him that hath a devil. Can a devil open the eyes of the blind?1 Peter 2:25 For ye were as sheep going astray; but are now returned unto the Shepherd and Bishop of your souls.

into:

1 Kings 21:17 And the word of the LORD came to Elijah the Tishbite, saying,Ezekiel 34:6 My sheep wandered through all the mountains, and upon every high hill: yea, my flock was scattered upon all the face of the earth, and none did search or seek [after them].Ezekiel 34:12As a shepherd seeketh out his flock in the day that he is among his sheep [that are] scattered; so will I seek out my sheep, and will deliver them out of all places where they have been scattered in the cloudy and dark day.